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Homework Statement
The cable to be used for the suspension bridge can safely support a tension of 40 MN.
Calculate the shortest length of the cable that can be used to construct the bridge.
Calculate the corresponding value of h.
(Neglect the issue of safety factor).
L = 72
Homework Equations
I have no idea
The Attempt at a Solution
i have been trying to find any equation to find the sag or the length but i need the sag to get the length or i need the load to get the sag.
can anyone give me a point in the right direction
cheers Nathaniel